Contact us
Choose a category below so we can get back to you as quickly as possible.
f(x)=x^2-6x+2 =(x^2-6x+9)-7 =(x-3)^2-7》-7 그래서 당직 구역 은[-7,정 무한)
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.